Update dependency @types/node to v12.20.55 (#220)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

server/package.json

@@ -25,7 +25,7 @@
     "@types/js-yaml": "^3.12.1",
     "@types/jsonwebtoken": "8.5.9",
     "@types/lodash": "^4.14.149",
-    "@types/node": "12.12.14",
+    "@types/node": "12.20.55",
     "@types/object-hash": "^1.3.0",
     "@types/supertest": "^2.0.8",
     "execa": "3.4.0",

yarn.lock

@@ -1750,11 +1750,16 @@
   dependencies:
     "@types/node" "*"
 
-"@types/node@*", "@types/node@12.12.14", "@types/node@>= 8":
+"@types/node@*", "@types/node@>= 8":
   version "12.12.14"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.14.tgz#1c1d6e3c75dba466e0326948d56e8bd72a1903d2"
   integrity sha512-u/SJDyXwuihpwjXy7hOOghagLEV1KdAST6syfnOk6QZAMzZuWZqXy5aYYZbh8Jdpd4escVFP0MvftHNDb9pruA==
 
+"@types/node@12.20.55":
+  version "12.20.55"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-12.20.55.tgz#c329cbd434c42164f846b909bd6f85b5537f6240"
+  integrity sha512-J8xLz7q2OFulZ2cyGTLE1TbbZcjpno7FaN6zdJNrgAdrJ+DZzh/uFR6YrTb4C+nXakvud8Q4+rbhoIWlYQbUFQ==
+
 "@types/normalize-package-data@^2.4.0":
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.0.tgz#e486d0d97396d79beedd0a6e33f4534ff6b4973e"